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Re: Attempting a mini-overhaul

Author: Gordon (NZ)
Date: 2003-04-07 21:45

".......The white [corrosion] just may....MAY...be ..........Personally I find lemon oil ...."
White tarnish is very common on nickel plating. It is difficult to remove. It is quite likely that it is caused by certain vapours, and from my experience I would certainly tentatively suspect the vapours given off by plant oils, especially as they go rancid or polymerise to a goo resembling half-set varnish. From my enquiries not much information is available (or perhaps known) about the interaction between nickel and vapours.

I know definitely from my experience that polyurethane fumes can turn nickel white overnight.

The green is similarly likely to be an interaction between an oil and the metal of the instrument. It ids common to see green around tenon rings where there has been an interaction, presumably between either copper or nickel and a cork grease, and it seems this is more common when the cork grease is animal based.

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